Growing community of inventors

Enschede, Netherlands

Roel Ritsma

Average Co-Inventor Count = 3.00

ph-index = 1

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 1

Roel RitsmaAlbert Jozef Peter Postmus (1 patent)Roel RitsmaAloysius Gerardus Majella Hemmer (1 patent)Roel RitsmaRoel Ritsma (1 patent)Albert Jozef Peter PostmusAlbert Jozef Peter Postmus (3 patents)Aloysius Gerardus Majella HemmerAloysius Gerardus Majella Hemmer (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Holec Holland N.v. (1 from 8 patents)


1 patent:

1. 6373355 - Switch with contacts which can be seen through a window

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as of
12/19/2025
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